Structural behaviour of tapered concrete-filled steel composite (TCFSC) columns subjected to eccentric loading

AbstractThe limit state design of large-span soil–steel composite bridges (SSCB) entails that understanding their structural behaviour in the ultimate state is as much needed as their performance under service conditions. Apart from box culverts, the largest loading-to-failure test was done on a 6.3-m span culvert. More tests on larger spans are believed essentially valuable for the development of the design methods. This paper presents the numerical simulation efforts of an 18.1-m span SSCB pertaining to its ongoing preparations for a full-scale field test. The effect of the different loading positions on the ultimate capacity is investigated. Comparisons are made between three-dimensional (3D) and two-dimensional (2D) models. The results enabled to realise the important role of the soil load effects on the ultimate capacity. It is found that the failure load is reduced when the structure is loaded in an asymmetrical manner. A local effect is more pronounced for the live load when the tandem load is placed closer to the crown. The study also illustrates the complex correlation between 3D and 2D models, especially if one attempts to simultaneously associate sectional forces and displacements.

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Wood-steel composite shear walls with openings

International Journal of Engineering & Technology ◽

10.14419/ijet.v10i1.31255 ◽

2020 ◽

Vol 10 (1) ◽

pp. 14

Author(s):

Tzanetis Vogiatzis ◽

Themistoklis Tsalkatidis ◽

Aris Avdelas

Keyword(s):

Finite Element ◽

Parametric Study ◽

Three Dimensional ◽

Shear Walls ◽

Shear Wall ◽

Critical Parameters ◽

Structural Behaviour ◽

Composite Shear Wall ◽

Steel Composite ◽

Composite Shear

This paper reports an investigation into the behaviour of wood-steel composite shear walls, consisting of strand laminated lumber boundary frames with infill steel plates. Recently it has been shown that wood-steel composite shear wall systems can offer various advantages over code-approved wood frame shear walls, including architectural flexibility. However, further research is needed so as to gain a better insight and understanding into the structural behaviour of this lateral load resisting system. On this basis, three-dimensional full-scale finite element models are developed and used to simulate the wood-steel composite shear wall with solid infill plates and with centrally-perforated infill plates. In this paper, firstly, a three-dimensional finite element model of wood-steel composite shear wall under monotonic loading. The numerical results were compared with experimental data and it was found that the model can predict the behaviour of wood-steel composite shear walls with reasonable precision. Using the verified model, a parametric study on wood-steel composite shear wall models with and without openings was performed. Critical parameters influencing the wood-steel composite shear walls behaviour such as the thickness of the steel plate and the opening ratio were investigated. The results of this parametric study provide useful information for the engineering application of wood-steel composite shear wall systems.

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Behaviour of Square Tubular Columns in Connection to I Beams with Welded Reverse Channel under Experimental Tests

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.763.458 ◽

2018 ◽

Vol 763 ◽

pp. 458-465

Author(s):

Luís Magalhães ◽

Carlos Rebelo ◽

Sandra Jordão

Keyword(s):

Axial Load ◽

Composite Structures ◽

Doctoral Program ◽

Experimental Tests ◽

Structural Behaviour ◽

Bending Tests ◽

Tubular Columns ◽

Cyclic Behaviour ◽

Steel Composite ◽

The University

This article presents some results of the experimental monotonic bending tests on the behaviour of the tubular columns and the reverse channel, effected based on a parametric variation of the most significant characteristics of the tubular profiles. The parameters considered are the thicknesses and the widths of the tubular columns faces, the filling with concrete and the axial load. The experimental tests program, included in the framework of the Doctoral Program Thesis in the scientific domain of the Steel Composite Structures, were performed on a test layout, corresponds to a framed structure, in the Structural Mechanic Laboratory of the Department of Civil Engineering of the University of Coimbra. The objective is to determine the characteristics of the nonlinear cyclic behaviour of the principal components of the tubular columns and the reverse channel, in this shape of joints. These components are related to the tubular columns walls, and to the web and flanges of the reverse channel yielding, crushing or instability, when submitted to bending, shear, compression and tension. The results of this experimental tests allow correlate the parameters considered with the structural behaviour of the connection, defined by the resistance, the stiffness, and the rotation capability.

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The Structural Behaviour and the Sheltering Efficiency of the Submerged Breakwater at the Entrance to the Port of Leixões Maintenance Charges and Effects

Coastal Engineering 1964 ◽

10.1061/9780872620056.038 ◽

1964 ◽

Author(s):

Duarte Abecasis

Keyword(s):

Structural Behaviour ◽

Submerged Breakwater

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EFFECT ON HARDNESS and MICRO STRUCTURAL BEHAVIOUR OF TOOL STEEL AFTER HEAT TREATMENT PROCESS

Scholarly Research Journal for Humanity Science & English Language ◽

10.21922/srjhsel.v4i24.10426 ◽

2017 ◽

Vol 4 (24) ◽

Author(s):

Karanbir Singh ◽

Aditya Chhabra ◽

Vaibhav Kapoor ◽

Vaibhav Kapoor

Keyword(s):

Heat Treatment ◽

Empirical Study ◽

Tool Steel ◽

Treatment Process ◽

Heat Treatment Process ◽

Structural Behaviour ◽

Treatment Processes ◽

En 31

This study is conducted to analyze the effect on the Hardness and Micro Structural Behaviour of three Sample Grades of Tool Steel i.e. EN-31, EN-8, and D3 after Heat Treatment Processes Such As Annealing, Normalizing, and Hardening and Tempering. The purpose of Selecting Tool Steel is Because Tool Steel is Mostly Used in the Manufacturing Industry.This study is based upon the empirical study which means it is derived from experiment and observation rather than theory.

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The behavior of concrete‐encased steel composite column‐beam joints under cyclic loading

The Structural Design of Tall and Special Buildings ◽

10.1002/tal.1842 ◽

2021 ◽

Author(s):

Fethi Şermet ◽

Emre Ercan ◽

Emin Hökelekli ◽

Ali Demir ◽

Bengi Arısoy

Keyword(s):

Cyclic Loading ◽

Composite Column ◽

Steel Composite

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Experimental and Analytical Study on Creep Characteristics of Box Section Bamboo-Steel Composite Columns under Long-Term Loading

Materials ◽

10.3390/ma14040983 ◽

2021 ◽

Vol 14 (4) ◽

pp. 983

Author(s):

Shixu Wu ◽

Keting Tong ◽

Jianmin Wang ◽

Yushun Li

Keyword(s):

Load Level ◽

Experimental Results ◽

Creep Model ◽

Composite Column ◽

Composite Columns ◽

Creep Coefficient ◽

Creep Characteristics ◽

Section Size ◽

Steel Composite

To expand the application of bamboo as a building material, a new type of box section composite column that combined bamboo and steel was considered in this paper. The creep characteristics of eight bamboo-steel composite columns with different parameters were tested to evaluate the effects of load level, section size and interface type under long-term loading. Then, the deformation development of the composite column under long-term loading was observed and analyzed. In addition, the creep-time relationship curve and the creep coefficient were created. Furthermore, the creep model of the composite column was proposed based on the relationship between the creep of the composite column and the creep of bamboo, and the calculated value of creep was compared with the experimental value. The experimental results showed that the creep development of the composite column was fast at first, and then became stable after about 90 days. The creep characteristics were mainly affected by long-term load level and section size. The creep coefficient was between 0.160 and 0.190. Moreover, the creep model proposed in this paper was applicable to predict the creep development of bamboo-steel composite columns. The calculation results were in good agreement with the experimental results.

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Structural behaviour of PSCC slab panel under four-point bending test

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/1144/1/012039 ◽

2021 ◽

Vol 1144 (1) ◽

pp. 012039

Author(s):

M A Iman ◽

N Mohamad ◽

A A A Samad ◽

Steafenie George ◽

M A Tambichik ◽

...

Keyword(s):

Bending Test ◽

Structural Behaviour ◽

Four Point Bending ◽

Four Point Bending Test

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Spin-ice physics in cadmium cyanide

Nature Communications ◽

10.1038/s41467-021-22515-3 ◽

2021 ◽

Vol 12 (1) ◽

Author(s):

Chloe S. Coates ◽

Mia Baise ◽

Adrian Schmutzler ◽

Arkadiy Simonov ◽

Joshua W. Makepeace ◽

...

Keyword(s):

Dipole Moments ◽

Interaction Strength ◽

Magnetic Interaction ◽

Energy Scale ◽

Spin Ice ◽

Structural Behaviour ◽

Geometric Frustration ◽

Cadmium Cyanide ◽

The Difference ◽

Increased Strength

AbstractSpin-ices are frustrated magnets that support a particularly rich variety of emergent physics. Typically, it is the interplay of magnetic dipole interactions, spin anisotropy, and geometric frustration on the pyrochlore lattice that drives spin-ice formation. The relevant physics occurs at temperatures commensurate with the magnetic interaction strength, which for most systems is 1–5 K. Here, we show that non-magnetic cadmium cyanide, Cd(CN)2, exhibits analogous behaviour to magnetic spin-ices, but does so on a temperature scale that is nearly two orders of magnitude greater. The electric dipole moments of cyanide ions in Cd(CN)2 assume the role of magnetic pseudospins, with the difference in energy scale reflecting the increased strength of electric vs magnetic dipolar interactions. As a result, spin-ice physics influences the structural behaviour of Cd(CN)2 even at room temperature.

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